Absence - Employee vacation tracking system
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Appogee Leave - PARIM Workforce Management Software
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
CWS TimeOut - CWS TimeOut is an online leave tracking software or absence management solution that can also be installed on the server.
Hubstaff - Simple yet powerful employee work tracker with screenshots, timesheets, billing, in-depth reports, and more. Understand productivity issues and act on them.